spring frost

基本解释

The growing season is defined as the period between the last frost in spring and first frost in the fall.
生长季节的定义为：春天最后一次霜冻到秋天第一次霜冻之间这段时间。
As to that great tree, strong-trunked and broad-armed, it seemed to defy a spring-night frost to harm its still bare boughs.
至于那株大树，树身雄伟，枝丫粗大，似乎不把春夜寒霜放在眼里，不怕它会损害那依然光秃的枝柯。
Comparing to the old microtherm standard for cold of the late spring and late frost index, the new standard is much more flexible and practical.
并与旧标准中的“倒春寒”和晚霜冻指标进行了对比分析。

The first shoots of spring are often vulnerable to a frost.
ECONOMIST: For those looking gamely for bright spots, China flickers